Microsoft Access

Microsoft AccessThe lesson for today on how to create forms, and I consider that the establishment of models is the most beautiful in Alakss
But before you start to create a simple partial models learn to design tables This is a partial supplement to the
We have learned in previous lessons of this part is to find out what types of fields heya data that will be included by: -
Home
What kind of data you want to use a field from the fields of the table???
What kind of values ​​that you want to enter in the field? For example, you can not store the type of
Data "text" in the field of data type "number".
What is the amount of storage space that you want to use in the field?
What are the types of operations that you want to perform on the values ​​in the field? For example, can
Microsoft Access compilation of the values ​​in the fields "number" and "currency", but can not collect the values ​​in the
Fields, "text" and "Object OLE"

Now we see when you open the table in Design view in the picture as Homhdd types of names of the types of
Data will be entered in each field such as text - note - No. ....... etc.
Here's an explanation for the use of each of them: -
1 (Text) to store data such as names, addresses, and any numbers that do not require calculations, such as phone numbers,
Numbers of goods or postal codes. Can field "text" that stores a maximum of 255 characters, but the size
Default field is 50 characters. Control property (field size) in determining the number of characters that can be
Entered in the field of "text".
2 (note) you need to store more than 255 characters. Field can "note" that stores the number of
Lines or 65 536 characters max.
3 - (number) to store any digital data can be used in mathematical calculations, except
Accounts that have entered the money or that require a high degree of accuracy. Is controlled in the type and size
For numeric values ​​that can be stored in the field of "Number" by setting the property (field size)
4 - (date / time) to store the date and time a j hours
5 - (currency) to store financial figures (YR, pounds, dinars, pounds, Aldrihammmmmm)
6 - (AutoNumber) to create fields and enter the numbers automatically when a record is added. Once you create a number
For the record, can not be deleted or changed "automatic numbering" growing by 1 is the most "numbering
Automatic "is also commonly the best choice for use as the primary key for the table.

the nexte

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microprocessors principles & application

Of course, who will read this address will think that the amount of the annotations in the subject and lectures tremendous fit with all the Micro
Perhaps many of those who want to learn programming micro most enthusiasts as the programming for the graduates of micro sections of electrons will be very easy
Perhaps you ask yourself a question for as long as anyone who wants to learn programming micro askingAnd it is not where to startBelieve me, the answer to this questionIs not read only and some annotations or search for a training course on the WebYou can do this alone, but by following the correct method or approach the correct
To get back from the beginning
Must first learn several important things before you learn how to swim
Classification of this science
Science Programming Advanced Micro Kntrulr science depends on the adoption of a holistic An awareness of the principles of basic and secondary before going into the
If we look at a superficial look at what this science, we find that it combines the flags key
1 - Digital Electronics2 - some science programming
Here we stand and pauseYou want to learn microHave you ever asked yourself a good dayWhat is already AlmkroOf course, will tell me of course I know what is the microI tell youReallyTell me yesThe less you knew meTell me all smoothIs the integrated circuit have entrances and exits and the unit alu and registers and control unit and other thingsThe less you wonderful and Mahzh Did you know the things that I mentioned and how it worksMost of those who work on micro and studied the serious study will answer this question directly and without thinking to answer the followingSee the answer in the book so and so and so and so alsoThis is because the answer to this question would not only serve in a bookGoodThe other brother, who started learning from the articles on the web or in some of the lessons will answer, saying,This meaning and this meaning as well as well as you and such and such and so and so as well as in a certain time and not play only in a certain time